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89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
#ifndef NOTMUCH_SPRINTER_H
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#define NOTMUCH_SPRINTER_H
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/* Necessary for bool */
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#include "notmuch-client.h"
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/* Structure printer interface. This is used to create output
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* structured as maps (with key/value pairs), lists and primitives
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* (strings, integers and booleans).
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*/
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typedef struct sprinter {
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/*
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* Open notmuch database
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*/
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notmuch_database_t *notmuch;
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/* Start a new map/dictionary structure. This should be followed by
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* a sequence of alternating calls to map_key and one of the
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* value-printing functions until the map is ended by end.
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*/
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void (*begin_map)(struct sprinter *);
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/* Start a new list/array structure.
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*/
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void (*begin_list)(struct sprinter *);
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/* End the last opened list or map structure.
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*/
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void (*end)(struct sprinter *);
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/* Print one string/integer/boolean/null element (possibly inside
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* a list or map, followed or preceded by separators). For string
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* and string_len, the char * must be UTF-8 encoded. string_len
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* allows non-terminated strings and strings with embedded NULs
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* (though the handling of the latter is format-dependent). For
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* string (but not string_len) the string pointer passed may be
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* NULL.
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*/
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void (*string)(struct sprinter *, const char *);
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void (*string_len)(struct sprinter *, const char *, size_t);
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void (*integer)(struct sprinter *, int64_t);
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void (*boolean)(struct sprinter *, bool);
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void (*null)(struct sprinter *);
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/* Print the key of a map's key/value pair. The char * must be UTF-8
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* encoded.
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*/
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void (*map_key)(struct sprinter *, const char *);
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/* Insert a separator (usually extra whitespace). For the text
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* printers, this is a syntactic separator. For the structured
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* printers, this is for improved readability without affecting
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* the abstract syntax of the structure being printed. For JSON,
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* this could simply be a line break.
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*/
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void (*separator)(struct sprinter *);
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/* Set the current string prefix. This only affects the text
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* printer, which will print this string, followed by a colon,
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* before any string. For other printers, this does nothing.
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*/
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void (*set_prefix)(struct sprinter *, const char *);
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/* True if this is the special-cased plain text printer.
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*/
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bool is_text_printer;
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} sprinter_t;
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/* Create a new unstructured printer that emits the default text format
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* for "notmuch search". */
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struct sprinter *
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sprinter_text_create (notmuch_database_t *db, FILE *stream);
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/* Create a new unstructured printer that emits the text format for
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* "notmuch search", with each field separated by a null character
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* instead of the newline character. */
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struct sprinter *
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sprinter_text0_create (notmuch_database_t *db, FILE *stream);
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/* Create a new structure printer that emits JSON. */
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struct sprinter *
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sprinter_json_create (notmuch_database_t *db, FILE *stream);
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/* Create a new structure printer that emits S-Expressions. */
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struct sprinter *
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sprinter_sexp_create (notmuch_database_t *db, FILE *stream);
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#endif // NOTMUCH_SPRINTER_H
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